https://hal-agrosup-dijon.archives-ouvertes.fr/hal-01865921 Contributor : Bernard NicolardotConnect in order to contact the contributor Submitted on : Sunday, September 2, 2018 - 1:55:26 PM Last modification on : Tuesday, September 7, 2021 - 3:36:11 PM Long-term archiving on: : Tuesday, December 4, 2018 - 12:14:53 PM